package com.jingdianjichi.subject.application.config;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @program: jc-club
 * @description: 全局异常处理
 * @author: DY
 * @create: 2024-01-17 10:22
 **/
@Configuration
public class GlobalConfig  extends WebMvcConfigurationSupport {
    @Override
    protected void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        super.configureMessageConverters(converters);
        converters.add(mappingJackson2HttpMessageConverter());
    }

    private MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter(){
        ObjectMapper objectMapper=new ObjectMapper();
        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS,false);
        //空值不会返回给前端
        //空值全局处理
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        MappingJackson2HttpMessageConverter converter=new MappingJackson2HttpMessageConverter(objectMapper);
        return converter;

    }
}